Select the precipitate for the reaction of calcium hydroxide and phosphoric acid, A calclum oxide B phosphoric axide C calcium phosphate D hydrogen phosphate

## Step 1<br />The problem involves a chemical reaction between calcium hydroxide and phosphoric acid. To solve this problem, we need to understand the concept of precipitation in chemistry. Precipitation refers to the process where a solid forms from a solution during a chemical reaction.<br /><br />## Step 2<br />The balanced chemical equation for the reaction between calcium hydroxide (Ca(OH)2) and phosphoric acid (H3PO4) is:<br /><br />### \(3Ca(OH)2 + 2H3PO4 \rightarrow Ca3(PO4)2 + 6H2O\)<br /><br />## Step 3<br />In this reaction, calcium hydroxide reacts with phosphoric acid to form calcium phosphate (Ca3(PO4)2) and water. The calcium phosphate is the precipitate in this reaction, as it is the solid that forms from the solution.